Sooo, what type of slayer should we use for this one?

[Tjalle]

http://www.youtube.com/watch?v=W6jUWSNbbvw

[Mansbeth]

That's scary!

[Stormcrow]

It's a Deepstaria enigmatica, a jellyfish of the family Ulmaridae first described in 1967 by F.S. Russel. The bell of this jellyfish is very thin and wide (up to approx. 60 cm), and resembles a translucent, folding sheet or lava lamp as the animal moves. They are usually found in Antarctic and near-Antarctic seas but have been spotted in waters near the United Kingdom, at depths of 829 to 1830 meters.

[Natalia]

Beautiful!  I'm inspired--I love jellyfish!  Like to create them in my art.    Thanks for posting, Tjalle. Thanks for the identification, Stormcrow!

[N49ATV]

I believe that was a slime that finally got high seas expansion, and fell overboard.